I looked at this light at an outdoor show and I was very impressed. It is rechargeable with a USB cable and 3 Black Diamond NiMH AAA, included. Or it also takes 3 alkaline AAA batteries, also included. I really like the set-up for night vision, you won't flash your eyes. Overall impress very positive for this headtorch and I look forward to its release so that I can run it through its paces in the field.